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A particle moves so that its position ve...

A particle moves so that its position vector is given by `vec r = cos omega t hat x + sin omega t hat y`, where `omega` is a constant which of the following is true ?

A

`vecv` and `veca` both are perpendiculart to `vecr`

B

`vecv ` and `veca` both are parallel to `vecr`

C

`vecv` is perpendicular to `vecr` and `veca` is directed aways form the origin.

D

velocity is perpendicular to`vecr` and `acceleration is directed towards origin

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The correct Answer is:
D
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